Topic: Cryptic markings on Wiring Diagram

[caller]

Hi

I have a CB 750 -k4 US. I try to fix the electric system and cant understand what some markings on the diagram stands for.
I got a wire diagram with belongs to CB 750 -k4. At least it is whats written on the top of the sheet 

1. Main switch, no color markings for the cables, IG, TL1, TL2 and B
2. Left handle, TL pL, pR.

I thought that TL1 could stand for Turn Left but I don't think so because on the starter button it got  TL1 and IG markings on it.

[tomkimberly]

Can you scan an image and post it?

Have you seen these?  http://www.cmsnl.com/classic-honda-fansite/wiring_diagrams.php

This one is for a CB450.  http://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB450(Glenns).jpg

Tom

[caller]

Unfortunately the wire diagram on the link is not correct 
For example it says that the motorcycle got two horn buttons, one on each handle. But it wont tell what the cryptic letters stand for

[LesterPiglet]

I think the horn on the right switch is wrongly tagged, that is the starter button. TL means turn lamp I believe. Ig ignition. P= park.
Could you link to the diagram you are using please?

[ChuckG750f1]

See if this helps
http://motorcyclewiringdiagram.net/tag/honda-cb750-k3-k7-wiring-diagram/

[LesterPiglet]

See if this helps
http://motorcyclewiringdiagram.net/tag/honda-cb750-k3-k7-wiring-diagram/

That's the one with the wrongly tagged starter button.

[ChuckG750f1]

Sorry.  The new clymer has a good one in color though.

[Bodi]

IG is the ignition power, black wire.
B is battery, from the MAIN fuse. Red wire.
TL1 and TL2 are a bit confusing. I think TL1 is the wire to the tail light (brown), and TL2 is power from the TAIL fuse (brown/white). The brn/wht wire probably connects to two switch terminals, TL2 and P.
There should maybe be a P terminal as well that .
The starter is on the right pod, no horn. Horn on left. I think something is wrong with your diagram if you see a horn wire or any TL wires to the pods. Find a Honda wiring diagram from the Honda service manual or owner's booklet.

[ChuckG750f1]

Hope this helps.  I just took digital pics from latest clymer and put them on photobucket.  You should be able to zoom them and see colors of wires.  Cheers.

pg1:  http://i635.photobucket.com/albums/uu73/chuxpics/wiring001.jpg

pg2:  http://i635.photobucket.com/albums/uu73/chuxpics/wiring002.jpg

[lucky]

TL1= is tail light one. Functions of the switch.
PL= parking lights.
IG=ignition (12 volts_

When you see a //////// line on a wire  that means that wire is switched on and off like the yellow red start button. Sometimes it is energized but  mostly it is off.


Not right "pod" It is the right handlebar switch.

BTW...There is a mistake on some of the wiring diagrams with the horn button and starter switch being mixed up.

[Irukandji]

When you see a ------line on a wire  that means that wire is switched on and off like the yellow red start button. Sometimes it is energized but  mostly it is off.


Actually I thought the ---------  was the stripe color on the wire?

[LesterPiglet]

Actually I thought the ---------  was the stripe color on the wire?

I think Lucky is referring to the b&w diagrams.

[lucky]

When you see a ------line on a wire  that means that wire is switched on and off like the yellow red start button. Sometimes it is energized but  mostly it is off.


Actually I thought the ---------(Edit)////////  was the stripe color on the wire?

The stripe of the wire is parallel ON the WIRE itself.
The stripe on the DRAWING is a diagonal dashed line and is the same COLOR as the actual wire.

[lucky]

Actually I thought the ---------  was the stripe color on the wire?

I think Lucky is referring to the b&w diagrams.

Yes that is right and some people are colorblind as many of us are.
We all see red and yellow differently and blue and green differently.
So I may say it is a red wire with a white stripe and you may see it as an orange wire with a white stripe.
That is WHY those "cryptic "markings are on the drawings so there will be no confusion. Look at the  legend.

[Irukandji]

thanks...i learned more today about this

[caller]

Thanks all of you for participating in this thread.
My main enigma is how are the headlight and taillight fuses feed. If I follow the cables to the main switch I cant see how they get the electrical current from the battery.
As my wire diagram I use a large sheet 50x30 cm. It is the best explanation of wire diagram as far as I know. Its from an owners manual, I think. The advantage of this big sheet is that I can see all the markings and the small knots for the cables that shows if they are connected or if it is an unconnected crossing.
I downloaded the big picture and printed it in many parts, cut and paste with real scissors and tape until I got this big sheet of paper.
To get the complet picture it was necessary to use four pictures. Unfortunately the maximus size for attachments only allows me to show three out of four.
I am curios abut the diagram from for CB 750 k1-k5 posted by Chuck. A K1 got only one fuse and k3 and more modern bikes got three fuses.

[ChuckG750f1]

Caller- Nice documentation you have there.  The Clymer Manual  shows the K0 (1969-1970) with only one fuse.  The diagram I posted on photobucket is for  K1-5 (1970-1975).  I don't know when the transition was myself.  However, I think the diagram I have and yours seem to agree.

The red wire from the 15A main fuse brings 12V to the ignition switch.  When it is in the On position, the Brown wire gets 12V and goes to the Taillight Fuse and the Brown/White gets 12V.  This Brown/White wire is connected to the Brown/Red wire which goes to the Headlight fuse.

Please forgive me if this is obvious to you and not answering your question.

-Chuck

[caller]

Yes I am most glad to have found it. All other diagrams was unclear into unreadability. I am also glad to share it with others whom have the same problem as I have.

 I can see on the diagram what circuit each of the fuses supply but I cant figure out what way the current comes to the headlight- and rearlight fuse.

[bollingball]

When you see a //////// line on a wire  that means that wire is switched on and off like the yellow red start button. Sometimes it is energized but  mostly it is off.

Can someone post a print with these marking on them. I don't recall seeing them
 Thanks Ken

[ChuckG750f1]

Yes I am most glad to have found it. All other diagrams was unclear into unreadability. I am also glad to share it with others whom have the same problem as I have.

 I can see on the diagram what circuit each of the fuses supply but I cant figure out what way the current comes to the headlight- and rearlight fuse.

On the ignition switch in the ON position, there is a black wire that gets 12V from the main.  That black wire distributes 12V to the control switches and elsewhere.  That may be what you're missing.